Dies.



C.H. BRISBIN.

'D|Es. l APPLICATION FILED JUNE I9. 191B.

1,301,095. lafnted App. 22,1919.

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CHARLES H. BRISBIN, 0F Y'UlVIA, ARIZONA.

DIES.

Specification of Letters Patent.

Patented Apr. 22, 1919.

Application filed J une 19, 1918. Serial No. 240,755.

To all whom t may concern:

Be it known that I, CHARLES H. BRIsBIN, a citizen of the United States, and a resident of Yuma, in the county of Yuma and State of Arizona, have invented a new and useful Improvement in Dies, of which the following is a specification.

My invention is `an improvement in a set of dies especially adapted for use with brick machines to form the tempered clay or other plastic material into interlocking bricks when laid in a wall.

The dies consist of seven separate parts.

In the drawings Figure 1 is a cross-section of the dies placed on a block of clay, compressed as in a brick machine, and cut through the middle of the dies and clay lengthwise.

Figs. 2 to 8 illustrate block removed and the separate parts of dies.

In Fig. l, l is the upper die, 2 is the clay under pressure, 3 is the upper plate of the lower die, 4 is the under plate of the lower die, 5 5 are two annular cores similar in every respect which pass through the upper plate of the lower die holding it in place and threaded into the lower plate of the lower die, 6 6 are two spiral steel springs surrounding the cores and are forced into the annular recesses o-f the lower plate of the lower die and as the pressure on the dies is removed the two plates vare separated by the springs;v 7 is one of two annular depressions in the upper die into which clay is forced. When pressure from the dies is removed the lower die presents a face of even surface which allows the block to pass unobstructed from the dies.

In Fig. 2 the block of clay is removed from the dies showing a cross-section of one half with 7 7 the annular bosses formed in the depressions of the upper die. In laying the blocks either lengthwise or crosswise the bosses and depressions are concentrically opposite and form interlocking walls when laid with the bosses in the depressions.

In Fig. 3 the face of the upper die is presented with 1 1 the annular depressions shown.

In Fig. l the face of the upper plate of the lower die is presented with 1 1 showing the annular recesses in which the shoulders of the cores it.

In Fig. 5 the upper face of the lower plate of the lower die is presented.

In Fig. 6 a cross-section of the lower plate of the lower die is presented in which 1 1 are the annular recesses into which the spiral springs are forced under pressure on the dies and 2 2 are the screw parts of the cores.

In Fig. 7 one of the cores is enlarged.

In Fig. 8 one of the spiral springs is enlarged.

I claim ll. In set of dies, an upper die having annular depressions, a lower die having two plates, and having spiral springs, said plates being separated when not under pressure by said spiral springs; annular cores registering with the annular depressions threaded into the lower plate, each of the cores being surrounded by one of said springs; and enlarged into the upper plate, having shoulders and annular recesses, said shoulders f1tting into said recesses substantially as described.

2. In a molding device a set of dies having depressions, an upper die, a lower die having two plates; spiral springs, cores reglsterlng with the depressions, each spring surrounding one of said cores, the cores being projected into the upper plate.

In testimony whereof I have set my hand in the presence of two subscribing witnesses.

CHARLES I-I. BRISBIN. Witnesses: i

OSCAR F. TowNsEND, L. L. ODLE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

